Charging system, voltage converter unit, and accumulator unit

Abstract

A charging system for an electrical vehicle, the charging system including: a storage unit designed for the supply of electrical energy via two supply terminals, wherein the storage unit includes a store including two terminals disconnectably connected to the two supply terminals via a second disconnection switch and a third disconnection switch; a voltage converter unit designed as a construction unit which is separate from the storage unit and which is connected to the storage unit via three terminals, wherein in a connected state, within the storage unit, two of the three terminals are connected to the two terminals of the store, and a third of the three terminals is connected to one of the two supply terminals, and within the voltage converter unit the third of the three terminals of the voltage converter unit leads via a first disconnection switch.

1 . A charging system for an electrical vehicle, the charging system comprising:
 a storage unit designed for supply of electrical energy via two supply terminals, wherein the storage unit comprises a store comprising two terminals disconnectably connected to the two supply terminals via a second disconnection switch and a third disconnection switch; and   a voltage converter unit designed as a construction unit which is separate from the storage unit and which is connected to the storage unit via three terminals of the voltage converter unit, wherein in a connected state:
 within the storage unit
 two of the three terminals of the voltage converter unit are connected to the two terminals of the store, and 
 
 either according to a second embodiment variant within the storage unit
 the third of the three terminals of the voltage converter unit is connected to one of the supply terminals via a first disconnection switch, 
 
 or according to a first embodiment variant 
 within the storage unit
 the third of the three terminals of the voltage converter unit is connected to one of the two supply terminals; and 
 
 within the voltage converter unit the third of the three terminals of the voltage converter unit leads via a first disconnection switch. 
   
     
     
         2 . The charging system according to  claim 1 ,
 wherein the voltage converter unit comprises:
 an input terminal, 
 an output terminal, 
 a common terminal, and 
 a voltage converter for converting an input voltage which is present between the input terminal and the common terminal into an output voltage which is present between the output terminal and the common terminal; 
   wherein the storage unit comprises:
 a first terminal for the connection to an input terminal of the voltage converter unit, 
 a second terminal for the connection to the output terminal of the voltage converter unit and for feeding a first terminal of the store, 
 a third terminal for the connection to the common terminal of the voltage converter unit and for feeding a second terminal of the store, 
 a first supply terminal for the connection to a first charging terminal of a charging station, and 
 a second supply terminal for the connection to a second charging terminal of the charging station, and 
   wherein:
 either according to the second embodiment variant 
 within the storage unit
 the first supply terminal is disconnectably connected to the first terminal of the storage unit via the first disconnection switch, 
 the second terminal of the storage unit and the first terminal of the store are disconnectably connected to the first supply terminal via the second disconnection switch, and 
 the third terminal of the storage unit and the second terminal of the store are disconnectably connected to the second supply terminal via the third disconnection switch, 
 
 or according to the first embodiment variant 
 within the voltage converter unit
 the input terminal of the voltage converter unit is disconnectable from the voltage converter via the first disconnection switch, 
 
 within the storage unit
 the first supply terminal is connected to the first terminal of the storage unit, 
 the second terminal of the storage unit and the first terminal of the store are disconnectably connected to the first supply terminal via the second disconnection switch, and 
 the third terminal of the storage unit and the second terminal of the store are disconnectably connected to the second supply terminal via the third disconnection switch. 
 
   
     
     
         3 . The charging system according to  claim 1 , wherein the voltage converter unit is designed to be able to be manufactured, handled, and transported independently of the storage unit. 
     
     
         4 . The charging system according to  claim 1 , wherein the three terminals via which the voltage converter unit is connected to the storage unit are releasable and reconnectable terminals. 
     
     
         5 . The charging system according to  claim 1 , wherein the supply terminals are formed on a single plug or on two separate plugs. 
     
     
         6 . The charging system according to  claim 1 , wherein the supply terminals are designed for a maximal rapid charging current which is more than double a maximal charging current capable of being provided by the voltage converter unit. 
     
     
         7 . The charging system according to  claim 1 , wherein the supply terminals are designed for a maximal rapid charging current of above 300 amperes and/or the voltage converter unit is designed for a maximum charging current of above 50 amperes. 
     
     
         8 . A voltage converter unit comprising:
 an input terminal for the connection to a first pole of an input voltage source;   an output terminal for the connection to a first pole of a consumer which is to be fed; and   a common terminal for the connection to a second pole of the input voltage source and to a second pole of the consumer,   wherein the input terminal leads via a first disconnection switch.   
     
     
         9 . A storage unit comprising:
 two supply terminals;   a store comprising two terminals which are disconnectably connected to the two supply terminals via a second disconnection switch and a third disconnection switch; and   three terminals for connection to corresponding terminals of a voltage converter unit, wherein   within the storage unit
 two of the three terminals are connected to the two terminals of the store, and 
   either according to a second embodiment variant
 a third of the three terminals is disconnectably connected to one of the two supply terminals via a first disconnection switch, 
   or according to a first embodiment variant
 the third of the three terminals is connected to one of the two supply terminals. 
   
     
     
         10 . The charging system according to  claim 4 , wherein the releasable and reconnectable terminals are plug-in terminals, screw terminals, or clamping terminals. 
     
     
         11 . The charging system according to  claim 5 , wherein the single plug or the two separate plugs each have safety contacts for a pilot circuit or a safety circuit respectively. 
     
     
         12 . The charging system according to  claim 7 , wherein the supply terminals are designed for a maximal rapid charging current of above 400 amperes, and/or the voltage converter unit is designed for a maximum charging current of above 100 amperes.